Improvement in snow-plows



UNITED STATES PATENT OFFICE.

BENJAMIN B. SWEET, OF WILMINGTON, DELAWARE, AND JOHN NOBLE, OF

PHILADELPHIA, PENNSYLVANIA. I

IMPRovEMENT IN sNow-PLows;

Specification forming part of Letters Patent No. 143,73 l, dated'October 14, 1873 application filed August 25, 1873.

To all whom t may concern: n

Be it known that we, BENJAMIN B. SWEET, of Wilmington, Delaware, and JOHN NOBLE, of Philadelphia, Pennsylvania, have invented an Improved Heated Snow-Plow, of which the following is a specification:

`The. object of our invention is to thoroughly heatfthe nose and other exterior portions of a plow for removing snow from' railway-tracks 5 and this object we accomplish by directing the whole body of the products of combustion from a furnace, A, into the extreme front portion or nose B of the plow, thence around a partition, D, into a chamber, E, bounded. by the nose and sides F F of the plow, and thence through Y the flues of a boiler, G, or around another partition, if a boiler is not used, before they nally escape through the stack H at the front of the plow, all as plainly shown in the longitudinal section, Figure 1, and transverse section, Fig. 2, on the line l 2 of the accompanying drawing. The'furnace Aoccupies the whole lower portion of the plow beneath the partition D, and has a grate, a, and ash-pan b, access being obtained to the spaces above and below the grate through doors dand-e at the rear end of the plow. The partition D is inclined downward at its front end, so that it may be extended as ucts of combustion are brought in contact with and thoroughly heat the upper portion of the nose and the sides and top of the plow, so that in forcing the latter forward the snow, if light, will be entirely melted by contact with the heated surfaces,'while, if it should be heavy, sufficient will be melted to prevent .it from packing and adhering to and obstructing the passageof the plow, the remainder being deiiected to opposite sides of the track, as usual.

We propose to use the steam-boiler G only when the plow is to be self-propelling, a simple arch or partition, forming a continuation of the partition h, being employed, if a boiler is not required.

We claim as our invention- A snow-plow, in which are combined a furnace, A, a partition, D, extending into the nose of the plow, and a return due-boiler, G, or its equivalent, whereby the whole of the ,products of combustion from the said furnace Witnesses WM. A. STEEL, HARRY SMITH. 

